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Reliable Champagne

#646b2d
Notes

Reliable Champagne (#646B2D) is a deep yellow with an earthy character. It leans grounded and natural, the kind of color that plays well with wood, clay, linen, and warm neutrals. Its HSL profile (67°, 41%, 30%) places it in the balanced band at a dark lightness. It works well as a headline, icon, or deep background in an otherwise light layout, pairing cleanly with cream, bone, and warm neutrals. For a confident two-color system, pair it with its complementary blue. For something softer, pull in its analogous neighbors on either side of the wheel.

HEX
#646b2d
RGB
rgb(100, 107, 45)
HSL
hsl(67, 41%, 30%)
HWB
hwb(67 18% 58%)
OKLCH
oklch(50.8% 0.086 114.9)
P3
color(display-p3 0.3972 0.4187 0.2112)
HSV
hsv(67, 58%, 42%)
LAB
lab(43.38% -12.39 33.27)
LCH
lch(43.38% 35.50 110.42)
CMYK
cmyk(7%, 0%, 58%, 58%)

Etymology

Reliable
adjective

Latin re-ligāre, to bind back — adjectival suffix -able. As a color modifier, reliable implies a clear-and-trustworthy-and-consistent quality where the hue carries the visual register of dependable-and-consistent design-element. Sits at the crisp-and-honest end of the grid, parallel to dependable and trustworthy in usage.

Champagne
noun

The pale, slightly amber yellow of dry sparkling wine from the Champagne region of northern France — a color produced by long contact with the lees in the bottle, regardless of grape source. The color refers to the wine in a clean flute: a soft, faintly golden yellow-tan with the optical lightness of a clear liquid. Lighter than honey, warmer than cream, with the celebratory weight of a French appellation that's been protected since 1936.

Closest matches

The nearest named color in three reference sources, ranked by perceptual distance (ΔE76 in CIELAB). ΔE < 1 is imperceptible to most viewers; ΔE > 10 is clearly different. When two sources point to the same hex they’re merged into one tile; click any to open that color’s page.

Variations

Click any swatch to explore

Harmonies

Accessibility

Color-vision simulation

How this color appears to viewers with the four major color-vision-deficiency types. Computed via the Machado (2009) physiologically-based model. If a tile matches the original, the color reads the same to that viewer.

#646b2d
Original
#726627
Protanopia
#726731
Deuteranopia
#6a655d
Tritanopia
#656565
Achromatopsia
WCAG contrast

The color used as foreground text against pure white and pure black, with the contrast ratio and WCAG 2.1 grade. Aim for AA (4.5:1) for body text and AA Large (3:1) for 18 pt+ headlines; AAA (7:1) is the gold standard for long-form reading surfaces.

The quick brown foxSample body text at normal size. The wcag minimum for body contrast is 4.5:1 (AA) or 7:1 (AAA).
AAon White
5.70:1
The quick brown foxSample body text at normal size. The wcag minimum for body contrast is 4.5:1 (AA) or 7:1 (AAA).
AA Largeon Black
3.68:1

Wide gamut

Display P3 representation

The CSS Color 4 wide-gamut form of this color. Both swatches render the same color on every display — the P3 form only diverges from sRGB when a designer pushes channels outside sRGB's reach.

sRGB hex
sRGB hex
##646B2D
Display P3
Display P3
color(display-p3 0.3972 0.4187 0.2112)
P3 has subtle headroomOKLCH chroma 0.086

Moderately saturated colors gain a small bump in P3 — the difference is usually visible side-by-side on wide-gamut hardware but won't change the character of the color.

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